ExtJS 4.1 and right to left

Hi

One of the features that was going to be introduced by ExtJS 4.1 release is right to left support. How is it coming? The release is out but I can't find any trace of the "right to left" support. I've tested the grid and tree components by setting the html tag's direction to "rtl" but the result was unacceptable! Is this feature forgotten or some special care is needed?